<p>Stopper, Neck Size 25mm, Material of Construction Natural Rubber, Color Black, Special Features 5mm Hole Size, 55mm Bottom Diameter, 67.5mm Top Diameter, Manufacturers Warranty Length 1 yr., Package Quantity 4</p> <p><br /><b>Features</b></p> <ul> <li>Color: Black</li> <li>Item: Stopper</li> <li>Material of Construction: Natural Rubber</li> <li>Manufacturers Warranty Length: 1 yr.</li> <li>Stopper Size: 13</li> <li>Neck Size: 25mm</li> </ul> <p></p>